Tool-handle.



No. 054,150. Patented July 24, |000. J. HANNA 0 E. J. JEnLlcKA.

TU L H A N D L E.

(Application led Sept. 18. 1899.)

(No Model.)

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Lilli] W @"lIIIIIIIIHIIIIIIIIHIIIIIIIIIIIH QiiiiillllllllilllllillllIIIIIIIIIIIHIIIIIIII 59]! JOSEPH I-IANNA ANDEDWARD J. JEDLICKA, OF CHICAGO, ILLINOIS.

TOOL-HANDLE.

SPECIFICATION forming part of Letters Patent No. 654,150, dated July 24,1900.

Application filed September 18, 1899. Serial No. 730,878. (No model.)

To all whom it may concern.-

Be it known that we, JOSEPH HANNA and EDWARD J. JEDLICKA, citizens ofthe United States, residing at Chicago, in the county of Cook an d Stateof Illinois,have invented a new and useful Improvement in Tool-Handles,-of which the following is a specification.

This invention relates to that class of rotatable tools, such asscrew-drivers or drills, which are provided with spirally-groovedspindles or bits adapted to be rotated by the longitudinal movementthereon of a handgrip; and the object of the invention is to provide asimple, reliable, and economicallyconstructed tool of this class inwhich the spindle may be continuously rotated in one direction bycomplete reciprocation of the hand-grip thereon or reversed in directionof rotation by the upward and downward movement of the hand-grip whenthe reciprocations are not complete from end to end of the grooves.

In the drawings forming part of this speciiication, Figure l is a view,partly in elevation and partly in section, illustrating the invention asapplied to a screw-driver. Fig. 2 is a perspective View of the groovedportion of the bit or spindle detached. Fig. 3 is an enlarged sectionalview of the hand-gri p and part of the spindle therein. Fig. 4 is atransverse sectional view on the plane indicated by the broken line at 4of Fig. 3. Fig. 5 is a detail View, in side elevation, of part of thespindle, specially illustrating the crossingpoint and vanishing innerends ofthe grooves. Fig. 6 is a transverse sectional view, on anenlarged scale, through one of the clutch-lever rollers and balls on thesame plane as Fig. 4.

Like letters of reference indicate the same parts wherever they appearin Ythe several figures of the drawings.

Referring to the drawings by letters,A indicates a spindle upon which isswiveled a head or handle A', the spindle being illustrated in thisinstance as that of a screw-driver having the usual dat working end,although the invention is equally applicable to the bits of alltools-such as drills, &C.-which require to be rotated. In the surface ofthe spindle are cut or otherwise formed two reversely-arranged spiralgrooves B and C, which are joined at their adjacent ends. Each end ofeach spiral from opposite sides of said line.

or groove is formed with a short reverselyarranged groove E and E at theends of the groove B, and F? and F3 at the ends of the groove C. Each ofthese shorter grooves, as also a portion ofthe main groove adjacentthereto, tapers or inclines toward the surface until each end groovefinally disappears on the surface. Each of the spiral grooves makes acomplete circuit of the spindle, which will cause all of the ends of thegrooves to occupy the same axial line upon the surface of the spindle,and they are of the same depth at that point, and the short taperingends of each groove Will extend in opposite directions The intermediateportions of the main grooves are slightly deeper than the ends, asindicated at D and D2, respectively.

' Mounted upon the spindle so as to be moved freely from end to end is asleeve or nut G, the ends of which are provided with parallelperforationsH and H', which are located at a distance apart equal to thepitch' ofthe grooves A and B. Projecting through these perforations aretwo pins L and L', theinner ends of which are adapted to extend into thegrooves and rotate the spindle as the sleeve is reciprocated. The outerendsjofthe pins are pivotally secured to the ends of a lever J, which ispivotally mounted in a bifurcated stud or lug I, projectingfrorn thesleeve G. The inner ends of the pins are preferably provided Withroller-bearings N and N' and the balls O and O', respectively, as shownmore clearlyin Fig. 6. The rollers will engage with the Walls of thegrooves and the balls with the inclined or tapering portions of thebottoms and avoid undue friction. The length of the pins is such thatwhen one pin is in engagement with the surface of the spindle the otherone Will be forced into its respective groove, and when the ends of thegrooves are reached the outward movement of one pin will cause theinward movement of the other one until at the extreme end of thereciprocation in either direction the inward projection of the pins willbe the saine. At the beginning of the reverse reciprocating movement ofthe sleeve the spindle will be rotated in one direction or the other,accordingI as to Whether the pins enter the main grooves or the taperingends.

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In the operation of the invention the sleeve should be first moved toone end of its strokeas, for instance, to the upper or head end, asillustrated in Figs.,1 and 3. It is now ready to be moved down upon thespindle to turn the spindle in either direction. In turning the spindleto the right the pin L will leave point D3 and traversing the groove Bto point D will have caused the spindle to make one turn to the rightwhen the pin reaches D. The pin L' will now have reached the point F',which is the end of its stroke. The sleeve is now moved in the oppositedirection. The pin L entering the groove C and following it will holdthe pin L out of the groove B until the point F is reached by pin L andpoint D3 by pin L, being the end of the return stroke. The next movementof the sleeve will be a repetition of the rst and will continue therotation of the spindle to the right. Starting from the same point the.spindle maybe continuously rotated to the left by the same movement ofthe sleeve by simply starting the pin L out of groove A, andconsequently pin L' into groove B. All of the movements and results willthen be exactly the reverse ot those before described, and the spindlewill be continuously rotated to the left.

It will be observed that the groove B, as a complete groove, ends at D,where groove C begins, so that each complete groove is independent andextends exactly one circuit around the spindle, those parts of thegrooves beyond points D and D2 in either direction and the reversedparts at the ends merely serving as switches or cam-surfaces to forcethe pins out of the grooves, as before described.

The direction in which the spindle is to be rotated is determined by thepins L and L', which are caused to enter the desired groove by slightlyrotating the sleeve axially upon the spindle, the spindle beingprevented from rotating therewith byits engagement with the work. Forinstance, if it is desired to rotate the spindle to the right the sleeveis slightly rotated to the left and forced toward the tool beingoperated, which will cause the pin L to enter groove B; but if it isdesired to rotate the spindle to the left the sleeve is slightly rotatedto the right, which will cause the pin L' to enter the groove C, asshown in the drawings. If a continuous rotation is desired, the sleeveis slightl y rotated in the original direction at the beginning of thereturn stroke to cause the pins to enter their proper grooves. Thesimplicity,cheapness of construction, and durability of the device willbe obvious from the foregoing. The sleeve G and the lever may beinclosed in a hollow hand-grip, if desired, to protect the lever frominjury in use andto'aord a smoother grip for the user.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent of the United States, is-

1. In a rotatable tool, the combination with a spindle provided with tworeversely-arranged spiral grooves, each end of each of which is formedwith a short reversely-arranged groove, the short grooves and theportions of the main grooves adjacent thereto being each provided withan inclined bottom, said spiral grooves being united at their adjacentends and each making a complete circle of the spindle, of a swiveledhead at one end of the spindle and a tool at the other, a reciprocatorysleeve on the spindle, each end of which is provided with aninwardly-projectng pin, and means for reversely moving said pins inunison into or out of said grooves.

2. In a rotatable tool, the combination with a spirally-grooved spindle,of a swiveled head at one end and a tool at the other, a reciprocatorysleeve thereon, each end of which is perforated radially to its bore, apin in each perforation, the inner end of which is pro-4 vided with aroller and a ball, anda lever piv- .otally mounted on the sleeve andhaving its ends connected with said pins.

JOSEPH HANNA. EDWARD J. JEDLICKA.

lVitnesses:

JosEr REJsEK, JOSEPH M. STUKEL.

